In situ XANES study on TiO2–SiO2 aerogels and flame made materials

TD-DFT analysis of the electronic spectra of Ti-containing catalysts

“…As already stated in reference [25], silicon atoms are terminated with hydrogen atoms. The geometry corresponds to that determined with experimental XAFS (X-ray absorption fine structure) data [24,[45][46][47][48][49]. Differences could be observed in the Si-O-Ti bond angles between both models, since the crystalline structure imposes a constrained geometry to the tetrapodal system, while amorphous model has a more relaxed geometry.…”

Distinct spatial changes of the catalyst structure inside a fixed-bed microreactor during the partial oxidation of methane over Rh/Al2O3

“…Ref. [56]), the acquisition of XANES spectra is sufficient and thus the approach using a CCD or even a Fast Readout Low Noise (FReLoN, cf. [57]) CCD camera is very attractive.…”

The solid–solid interface: Explaining the high and unique photocatalytic reactivity of TiO2-based nanocomposite materials

“…The existence of the interfacial tetrahedral Ti sites in Degussa P25 is likely an outcome of the flame synthesis since tetrahedrally coordinated Ti species are intrinsically high in flame made catalysts, such as Degussa P25 [110].…”